* 1800 – War of the Second Coalition: Battle of Hohenlinden, French General Moreau defeats the Austrian Archduke John near Munich decisively, coupled with First Consul Napoleon Bonaparte's victory at Marengo effectively forcing the Austrians to sign an armistice and ending the war.

* 1800 – The French Army of First Consul Napoleon Bonaparte defeats the Austrians at the Battle of Marengo in Northern Italy and re-conquers Italy.

Under Napoleon Bonaparte, France took back the territory in 1800 in the hope of building an empire in North America.

Napoleon Bonaparte had gained Louisiana for French ownership from Spain in 1800 under the Treaty of San Ildefonso, after being a Spanish colony since 1762.

While the sale of the territory by Spain back to France in 1800 went largely unnoticed, fear of an eventual French invasion spread nationwide when, in 1801, Napoleon sent a military force to secure New Orleans.

In March 1800, Hermann alerted the French scientist George Cuvier to the existence of Collini's fossil, believing that it had been captured by the occupying armies of Napoleon and sent to the French collections in Paris ( and perhaps to Cuvier himself ) as war booty ; at the time special French political commissars systematically seized art treasures and objects of scientific interest.

By the autumn of 1800, the United States Navy and the Royal Navy, combined with a more conciliatory diplomatic stance by the government of First Consul Napoleon Bonaparte, had reduced the activity of the French privateers and warships.

* 1800 – Napoleon surrenders Malta to Great Britain.

He declined to help Napoleon Bonaparte stage his coup d ' état of November 1799, but nevertheless accepted employment from the Consulate, and from April 1800 to 18 August 1801 commanded the army in the Vendée.

Napoleon conquered Parma in 1800 and compensated the Bourbon duke with Etruria, a new kingdom he created from the Grand Duchy of Tuscany.

Pius VI's body was embalmed, but was not buried until 30 January 1800 after Napoleon saw political advantage to burying the deceased Pope in efforts to bring the Catholic Church back into France.

A commission of four eminent jurists was appointed in 1800 ( chaired by Cambacérès, now Second Consul, and including Louis-Joseph Faure ), and sometimes by First Consul Napoleon himself.

Louis XVIII attempted to strike up a correspondence with Napoleon Bonaparte ( now First Consul of France ) in 1800.

In 1800, France reacquired Louisiana from Spain, and in 1803, Napoleon Bonaparte I sold it to the United States as the Louisiana Purchase.

France regained control of Louisiana through the secret Treaty of San Ildefonso in 1800 but Napoleon Bonaparte I decided to sell the territory to the United States in 1803.

Spain remained in control of the territory encompassing the county until October 1, 1800 when Napoleon Bonaparte forced Spain to return the lost territories to France under the Treaty of Ildefonso.

Napoleon Bonaparte returned Louisiana to French control from Spain in 1800, under the Treaty of San Ildefonso ( Louisiana had been a Spanish colony since 1762.

The Austrian army had been defeated by Napoleon at the Battle of Marengo on 14 June 1800 and then by Moreau at the Battle of Hohenlinden on 3 December.

Spain returned its portion of Louisiana to France in 1800, but French leader Napoleon Bonaparte sold it to the United States in the Louisiana Purchase of 1803, permanently ending French colonial efforts on the American mainland.

By July 1800 Fox had " forgiven " the means by which he had come into power and claimed Napoleon had " surpassed ... Alexander & Caesar, not to mention the great advantage he has over them in the Cause he fights in ".

The reasons for this break are less clear and simple than those of the split with Austria, but there several key events occurred over the winter of 1799 – 1800 that helped: Bonaparte released 7, 000 captive Russian troops that Britain had refused to pay the ransom for ; Paul grew closer to the Scandinavian countries of Denmark and Sweden, whose claim to neutral shipping rights offended Britain ; Paul had the British ambassador in St. Petersburg recalled and Britain did not replace him, with no clear reason given as to why ; and Britain, needing to choose between their two allies, chose Austria, who had certainly committed to fighting Napoleon to the end.

This crushing victory, coupled with First Consul Napoleon Bonaparte's victory at the Battle of Marengo on 14 June 1800, ended the War of the Second Coalition.

The Battle of Marengo was fought on 14 June 1800 between French forces under Napoleon Bonaparte and Austrian forces near the city of Alessandria, in Piedmont, Italy.

By a daring crossing of the Alps with his Army of the Reserve ( officially commanded by Louis Alexandre Berthier ) in mid-May 1800 almost before the passes were open, Napoleon ( who crossed on a mule ) had threatened Melas's lines of communications in northern Italy.

Between about 1500 and 1800, other Luo groups crossed into present-day Kenya and eventually into present-day Tanzania.

In 1800, he purchased a ferry that crossed the Kentucky River in Frankfort.

Scotland was already one of the most urbanised societies in Europe by 1800.

By 1800 he had amassed almost a quarter of a million dollars, and had become one of the leading figures in the fur trade.

Regular meetings are recorded into the nineteenth century-eight in 1800, five or six before August 1801 and at least one in 1802, while as late as 1809 Leonard Horner was describing " the remnant of the Lunar Society " as being " very interesting ".

The Pindarick of Cowley was revived around 1800 by William Wordsworth for one of his very finest poems, the Intimations of Immortality ode ; irregular odes were also written by Samuel Taylor Coleridge, John Keats, and Percy Bysshe Shelley who wrote odes with regular stanza patterns.

However, the French seized many American merchant ships by war's end in 1800 — over two thousand, one source contends.

Anne Becher, born 1792, was " one of the reigning beauties of the day ," and a daughter of John Harmon Becher ( Collector of the South 24 Parganas district d. Calcutta, 1800 ), of an old Bengal civilian family " noted for the tenderness of its women.

Although the 1800 election was a close one, Jefferson steadily gained popularity during his term.

Also, de Gournay ( 1712 – 1759 ) ( who was the Intendant du commerce ) brought together a group of young researchers including François Véron Duverger de Forbonnais ( 1722 – 1800 ) and one of the two most famous physicrats, Anne-Robert-Jacques Turgot ( 1727 – 81 ).

The enigmatic Minoan Phaistos Disc of 1800 – 1600 BC has been considered by one scholar as an early example of a body of text being reproduced with reusable characters: it may have been produced by pressing pre-formed hieroglyphic " seals " into the soft clay.

For one thousand years, from 800 AD to 1800 AD, tolls were collected from pancake ships sailing on the Rhine River in Europe.

Nathaniel " Nat " Turner ( October 2, 1800 – November 11, 1831 ) was an American slave who led a slave rebellion in Virginia on August 21, 1831 that resulted in 60 white deaths and at least 100 black deaths, the largest number of fatalities to occur in one uprising prior to the American Civil War in the southern United States.

It was the strongest showing of any Federalist candidate for the Presidency since 1800, and the change of the votes of one or two states would have given Clinton the victory.

The first westward road was one coming from near Utica to Geneva, and, with the building of the Cayuga Bridge in 1800, was the road chosen by nearly all of the westward travelers.

The specification recorded in 1800 was one of twenty stops spread over three manuals.

Shinty is also one of the forebears of ice hockey: in 1800, Scottish immigrants to Nova Scotia played a game on ice at Windsor.

These Doppler shifts correspond to velocities of about 6 km / h ( 4 mph ) and 60 km / h ( 40 mph ) respectively at 1800 MHz, one of the operating frequencies for GSM mobile phones.

By 1800, Uxbridge had become one of the most important market towns in Middlesex, helped by its status as the first stopping point for stagecoaches travelling from London to Oxford.

Nathaniel Cook, one of Missouri's earliest and most prominent lawmakers, located his claim in the southeastern part of the county in 1800, now one of the most educated and affluent portions of St. Francois County.

In 1800, at the age of eighteen, Cotman exhibited at the Royal Academy for the first time, showing five scenes of Surrey and one of Harlech Castle.

The finest of the dozen country houses that Nash designed as picturesque castles include, the relatively small Luscombe Castle Devon ( 1800 – 04 ), Ravensworth Castle ( Tyne and Wear ) begun 1807 only finally completed in 1846, was one of the largest houses by Nash, Caerhays Castle in Cornwall ( 1808 – 10 ), Shanbally Castle, County Tipperary ( 1818 – 1819 ) was the last of these castles to be built.

Population density in Blandford and other hilltowns was limited by outmigration by about 1800 as more productive land in Western New York and the Northwest Territory became available, however emigrants were typically young men and women, while the older generation and usually one or two children usually remained in place and farms were not yet abandoned.

Lewis Bullock had one on the old " Bullock place " as early as 1800, possibly before that year.

Piqua started out as two separate communities, Upper Piqua and Lower Piqua in 1780 becoming one community by 1800.